p2p-media-loader-core/lib/utils/peer.js

P2P Media Loader core functionality

import md5 from "nano-md5";
import { PACKAGE_VERSION } from "./version.js";
export const TRACKER_CLIENT_VERSION_PREFIX = `-PM${formatVersion(PACKAGE_VERSION)}-`;
const HASH_SYMBOLS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
const PEER_ID_LENGTH = 20;
export function getStreamHash(streamId) {
    // slice one byte to have 15 bytes binary string
    const binary15BytesHashString = md5.fromUtf8(streamId).slice(1);
    const base64Hash20CharsString = btoa(binary15BytesHashString);
    return base64Hash20CharsString;
}
export function generatePeerId(trackerClientVersionPrefix) {
    const trackerClientId = [trackerClientVersionPrefix];
    const randomCharsCount = PEER_ID_LENGTH - trackerClientVersionPrefix.length;
    for (let i = 0; i < randomCharsCount; i++) {
        trackerClientId.push(HASH_SYMBOLS[Math.floor(Math.random() * HASH_SYMBOLS.length)]);
    }
    return trackerClientId.join("");
}
function formatVersion(versionString) {
    const splittedVersion = versionString.split(".");
    return `${splittedVersion[0].padStart(2, "0")}${splittedVersion[1].padStart(2, "0")}`;
}
//# sourceMappingURL=peer.js.map